Hello, I have a 2008 Toyota RAV4 that got the battery replaced about a month ago then last week the alternator had to get died and had to get replaced. I got the car back a few days ago and was driving it around for about 4 hours when the battery light came on briefly. The light continued to shut off and come back on for the next hour. The battery voltage with the alternator was about 13.70-13.85 at that time. And the resting voltage was about 12.30-12.50. This morning I started the car and the resting voltage was about 12.3 and the voltage upon turning the car on was 14.1. Is this normal after changing the alternator or is there another issue with the car?
Voltage with the engine running sounds OK. The old alternator may have killed off the new battery. Have it tested.
all the voltage are a tad low, but not serious. The light shouldn't be coming on though.
1st thing I would do is check all the connections. Made sure the battery connections are clean and tight, and the alternator too since that was recently done. Ground points will also come into play.
Running a diagnostic with a professional tool could also provide some clues why the light is coming on.
